************************************************************ Miniscribe Disk Drive Specifications For Model: 8425 ************************************************************ FORM FACTOR 3.5 inch HH INTERFACE ST412/ST506 DATA ENCODING METHOD MFM DATA TRANSFER RATE (Mbit/Sec) 5.0 DISK DRIVE CHARACTERISTICS HEADS 4 CYLINDERS 615 SECTORS/TRACK (512 Byte Sectors) 17 UNFORMATTED BYTES/TRACK 10,416 RADIAL TRACK DENSITY (TPI) 804 ROTATIONAL SPEED (RPM) 3,600 UNFORMATTED CAPACITY (MBytes) 25.6 FORMATTED CAPACITY (MBytes) 21.4 ACCESS TIMES (mSec)* SINGLE TRACK 15 ONE-THIRD STROKE** 68 MAXIMUM 150 *(INCLUDES SETTLING) **(APPROXIMATION OF AVERAGE) POWER REQUIREMENTS DISSIPATION (Watts) TYPICAL 9.9 MAXIMUM 13.0 CURRENT (Amps) +5 V DC (+ or - 5%) 0.6 +12 V DC (+ or - 5%) 0.7 MAXIMUM STARTUP CURRENT 2.0 PHYSICAL DIMENSIONS HEIGHT (in) 1.625 WIDTH (in) 4 DEPTH (in) 5.75 WEIGHT (lbs) 1.8 OPERATIVE ENVIRONMENTAL LIMITS MINIMUM TEMPERATURE (Centigrade) 4 MAXIMUM TEMPERATURE (Centigrade) 50 THERMAL GRADIENT (Degrees C/Hour) 10 RELIABILITY MTBF (Hours) 20,000 MTTR (Minutes) 30 COMPONENT DESIGN LIFE (Years) 5